Trapezoidal sides taper this five-tier bookshelf toward the top, which keeps a 79 inch tower from feeling heavy against a narrow wall. The frame measures only 12.5 inches deep yet holds a rated 254 lbs, with 51 lbs allowed on each shelf and 0.7 inch boards under the load. Elevated legs leave 4 inches of clearance beneath, and an anti-toppling device anchors the top.